Transmission Unable to Engage Reverse Gear
Code P073E indicates that the transmission control module (TCM) has detected a failure to engage reverse gear. This can be caused by low transmission fluid, a faulty shift solenoid, internal mechanical damage (such as worn clutches or bands), or a defective TCM. The condition may prevent the vehicle from moving in reverse or cause harsh engagement.
01. Most Common Causes
- Low or contaminated transmission fluid
- Faulty reverse shift solenoid
- Internal transmission damage (worn clutches, bands, or valve body)
- Defective transmission control module (TCM)
02. Symptoms You Will Notice
- Vehicle will not move in reverse
- Harsh or delayed engagement when shifting into reverse
- Transmission warning light or check engine light illuminated
- Transmission slips or hesitates in reverse
03. Step-by-Step Diagnosis
Step 1: Check transmission fluid level and condition; top off or replace if necessary.
Step 2: Scan for additional codes and perform a transmission system test using a professional scan tool.
Step 3: Inspect wiring and connectors to the transmission solenoids and TCM for damage or corrosion.
Step 4: Test the reverse shift solenoid resistance and operation; replace if out of spec.
Step 5: If no external issues found, perform a transmission pressure test to identify internal mechanical faults.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, driving without reverse gear is unsafe and may cause further transmission damage. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Costs range from $150 for a simple fluid change or solenoid replacement to $500 or more for internal transmission repairs.